I am using cvxopt 1.1 and glpk version 4.4.2. I tried running a very
simple and vacuous (effectively unconstrained) ILP as a sanity-check
but I am getting the wrong answer. I am solving
max c'x
s.t.
Gx <=h
where x is 3 dimensional binary vector, G=1,1,1 and h = 5 (so the
problem is effectively unconstrained as x1+x2+x3 is always less than
5.) The answer irrespective of the value of c is always 0,0,0!!